Each part has a specific function. Before we discuss the control unit and the arithmetic/logic unit in detail, we need to consider data storage and its relationship to the central processing unit. Computers use two types of storage: Primary storage and secondary storage.
With a worldwide box-office gross of over $2.7 billion, Avatar is often proclaimed to be the highest-grossing film, but such claims usually refer to theatrical revenues only and do not take into account home video and television income, which can form a significant portion of a film's earnings.
With so much money coming in from outside investors, studios could spend less of their own cash on each film, while still taking a 10 percent distribution fee off the top -- a perk they don't share with the banks [source: Epstein]. According to Parkinson's Law, more money means more (and more expensive) movies. The half-billion-dollar Avatar received 60 percent of its backing from non-studio sources, which makes it much less of a gamble for the nervous accountants at 20th Century Fox, but still one very pricey popcorn flick [source: Cieply].